American Dryer Corp MLS-460 manual Tumbler Basket Section Electrical Malfunctions, Introduction

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•Circuit wiring; refer to MLS-460 main panel wiring diagram MLS-460 tumbler (basket) junction box wiring diagram.

B.TUMBLER (BASKET) SECTION ELECTRICAL MALFUNCTIONS

INTRODUCTION

There are a number of electrical components associated with the MLS-460 tumbler (basket) section. These components are ALL interfaced to the tumbler (basket) junction box, and connected to the main electrical enclosure through a disconnect cable.

The “tumbler (basket) junction box” is located on the left side of the tumbler (basket), in the same area as the left drum motor. The title of the wiring for the tumbler (basket) section is “MLS-460 Tumbler (Basket) Electrical Junction Box Wiring Diagram.” The tumbler (basket) section electrical components provide:

•Front and rear door position information

•Drum rotation information

•Rear panel controls for unloading

•“EMERGENCY STOP” (E-Stop)

The “tumbler (basket) junction box” is located on the left side of the tumbler (basket) section, in the same area as the left drum motor. The title of the wiring diagram for the tumbler (basket) section is “MLS-460 Tumbler (Basket) Electrical Junction Box Wiring Diagram.” The tumbler (basket) section electrical components provide:

The following information will provide a means to respond to fault messages associated with the tumbler (basket) section, and verify ALL the electrical signals associated with it.

Refer to the MLS-460 Tumbler (Basket) Junction Box Wiring Diagram for detailed wiring information.

1.0Tumbler (Basket) Section Electrical Components

a.LOAD Door Switch - DS1

The LOAD door switch is located on the left side of the MLS-460 front doors and comprises of four (4) parts: head, arm, body, and cord grip device. The head is a rotating type, with a spring arm attached for switch actuation. The body contains a double pole, double throw, normally open switch. DS1 has two

(2)electrical functions, A and B.

b.UNLOAD Door Switch - DS2

The UNLOAD door switch is located on the right side of the MLS-460 rear doors and comprises of four

(4)parts: head, arm, body, and cord grip device. The head is a rotating type, with a spring arm attached for switch actuation. The body contains a double pole, double throw, switch. DS2 has two (2) electrical functions, A and B.

“A” provides rear door position signal to the PLC (Programmable Logic Controller).

“B” is a rear interlock to the burner controller circuit.

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Contents MLS-460 Installation/Operator’s Manual Retain This Manual In a Safe Place For Future Reference For Your Safety Page Table of Contents Motors ServicePower Malfunctions Important Information SectionExplosion could Result Safety PrecautionsPage Specifications SPECIFICATIONS/DIMENSIONSDimensions Reattach The Control Pendant Arm Installation ProceduresReassembly of Dryer Reassembly Instructions For Dryers Shipped In Three 3 Pieces Page Location Requirements Air Front Tilt Piston and Sprinkler Lines Internal AIR, ELECTRICAL, and Water ConnectionsPage Electric Tumbler Basket Motors Temperature Probe, Base, and Tumbler Basket DisconnectsPage Pendant Left Drum Motor Tumbler Basket Junction Box DisconnectExternal Supply Connections Condensate return line must be 1-1/4 pipe Exhaust Ducting Page Latest Edition Electrical RequirementsElectrical Requirements MLS-460 Steam Electrical Service SpecificationsPage Fresh AIR Supply Requirements Steam Requirements Steam InformationShut Down Instructions Preparation for Operation PRE START-UPClean any lint accumulation from inside the heat console Routine MaintenanceCleaning Suggested Cleaning ScheduleMonthly Tumbler Basket Support and Drive System Component System DescriptionsPage Page Main AIR Blower and Heat Reclaimer System Heat Reclaimer Adjustment Remove Electricity from the Unit Compressed AIR System Page Safety Devices Door Open Parts SERVICE/PARTS InformationService Returning Warranty Parts Warranty InformationReturning Warranty Cards WarrantyPage Troubleshooting Table of Contents Number TroubleshootingMain Disconnect Will Not Turn On Power MalfunctionsVerify red Sprinkler Power on main panel to be illuminated If NO, refer to paragraph #1 above Sprinkler circuit may be defective Machine Main Power Shuts Down Blue Indicator OffSprinkler Circuit Components 3CR CRB Not UsedSprinkler Circuit Description Page Malfunctioning PLC Programmable Logic Controller Emergency Stop E-Stop Buttons 1, 2,Page General Description PLC Message HI-TEMP FaultPage Page Introduction Tumbler Basket Section Electrical MalfunctionsDrum Rotation Sensor PRS1 Rear Panel Control Problems Emergency Stop E-Stop Function If YES, refer to a If NO, refer to b PLC OUT PIN 1 = Drum Reverse PLC OUT PIN 2 = Drum Forward PLC OUT PIN 7 = Unload Door Open PLC OUT PIN 10 = Front UP DS1-B=LOAD Door Switch DS2-B=UNLOAD Door Switch Wiring Back the PLC Programmable Logic ControllerProbable Solutions Base Section Electrical Malfunctions Wiring Back to the PLC Programmable Logic Controller Lint Drawer Proximity SwitchesPage Probable Causes Tumbler Reverse Pendant --- PB2 Pendant Control MalfunctionsLoad Level Unload Tumbler Reverse Tumbler Forward SEL a = Load SEL B = UnloadTumbler Forward Pendant --- PB1 Wiring Diagram Fuse 4 on Main Electrical Panel Faulty SwitchesWiring Back to PLC Programmable Logic Controller MLS-460 Pendant Assembly DiagramAnother Emergency Stop E-Stop Button Temperature SensingDisconnect Plug Faulty Switch Wiring Back to TB1 Exhaust RTD Resistive Temperature Device Sens1 Temperature Sensing Component DescriptionsWith the control voltage OFF Motors Circuit Wiring to the Analog Input ModuleVerify current setting Check circuit Check motor Retest LS-460 Idling LS-460 Running ADC113073 1- 01/14/00-15
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